All articles tagged with #bose einstein condensate
A refurbished upgrade to NASA's Cold Atom Laboratory aboard the International Space Station—about the size of a mini-fridge—lets scientists study ultracold atoms and Bose-Einstein condensates in microgravity, enabling longer observation of quantum behaviors and paving the way for future space-based quantum technologies in timing, navigation, and gravity sensing.
A University of Birmingham team used a Bose‑Einstein condensate split into two halves to emulate a universe with no external clock. By letting entropy flow between the halves, they defined an internal clock—entropic time—that ordered events in the bright sector and could run faster, slower, or stop altogether as entropy exchange varied. The researchers also derived a Schrödinger equation using this internal time, supporting the idea that time and its arrow may emerge from internal relations and observer ignorance rather than an external time parameter.
A Birmingham physicist created a nearly isolated Bose-Einstein condensate of ultracold rubidium atoms, split it into two halves, and showed that time can emerge from entropy exchange within the system—the entropic time—acting as an internal clock that speeds up, slows down, or stops as the halves exchange or cease entropy. The experiment, tied to ideas in quantum cosmology and the Wheeler–DeWitt equation, provides the first lab-based demonstration that relational time can arise from within a closed quantum system and even reproduces a Schrödinger-like description using this internal time.
NASA has upgraded its Cold Atom Lab on the International Space Station to further study Bose-Einstein condensates in microgravity, enabling larger quantum states to be probed for longer times and advancing quantum technologies by leveraging ultracold atoms to measure time, gravity, and motion with unparalleled precision.
Physicist Giovanni Barontini built a lab-sized ‘mini-universe’ by cooling ~24,000 rubidium atoms into a Bose-Einstein condensate and trapping them in a two-region optical setup. The atoms’ movement between a bright (observed) and a dark (unobserved) sector creates entropy exchange that defines an internal, emergent time—time that flows due to entropy rather than an external clock—offering experimental insight into time in quantum gravity and cyclic cosmology.
NASA upgraded the Space Station’s Cold Atom Lab with a redesigned magnetic trap and new gas-source hardware, enabling larger Bose-Einstein condensates and longer microgravity experiments to study ultracold quantum gases and advance space-based quantum technologies.
US researchers propose a 'neutrino laser'—a compact device that could emit coherent bursts of neutrinos by cooling radioactive atoms into a Bose-Einstein condensate and triggering synchronized decay via superradiance. If realized, it could transform neutrino research and enable new applications from underground communication to medical imaging, but the concept is still theoretical and faces significant technical hurdles.
Scientists have created a long-lasting (two seconds) dipolar Bose-Einstein condensate of sodium-cesium molecules at near absolute zero using a novel dual-microwave technique, opening new avenues for exploring exotic quantum matter and phases.
Scientists at Columbia University have successfully created a Bose-Einstein condensate from sodium-cesium molecules at ultra-cold temperatures using innovative microwave shielding techniques, marking a significant advancement in quantum physics and opening new avenues for research into quantum states and materials.
Scientists at Columbia University have created a molecular sodium-cesium Bose-Einstein condensate (BEC) that is dipolar and lasts for two seconds, opening new possibilities for exploring exotic states of matter and quantum physics applications. This breakthrough was achieved using microwave fields to control interactions at ultracold temperatures near absolute zero, potentially leading to advances in quantum chemistry and the study of novel quantum phases.
MIT physicists have proposed a theoretical concept for a neutrino laser using a Bose-Einstein Condensate of rubidium-83 atoms, which could enable more precise study of neutrinos and potentially revolutionize particle physics and communication technologies.
MIT physicists propose a novel concept for a 'neutrino laser' that uses super-cooled radioactive atoms in a Bose-Einstein condensate to produce a coherent, amplified burst of neutrinos, potentially revolutionizing communication and medical technology. They plan to test this idea with tabletop experiments, aiming to harness superradiance to accelerate neutrino production.
MIT physicists propose a novel concept for a neutrino laser that could be created by cooling radioactive atoms to a quantum state, potentially enabling faster neutrino production and new applications in communication and medical imaging.
Scientists from Columbia University have created a dipolar Bose-Einstein condensate (BEC) using molecular sodium-cesium, which lasts for two seconds and is only five nanoKelvin above absolute zero. This breakthrough, achieved with the help of two microwave fields, opens the door to numerous applications in exotic matter and quantum chemistry, marking a significant advancement in the study of quantum physics.
Researchers at Columbia University have created a Bose-Einstein Condensate (BEC) using sodium-cesium molecules cooled to five nanoKelvin, stable for two seconds. This breakthrough opens new avenues for exploring quantum phenomena and simulating complex materials' quantum properties, marking a significant advancement in quantum physics and ultracold molecule research.